Improvement of conversion efficiency of atom-molecule Bose-Einstein condensate

TL;DR

This paper demonstrates a highly efficient method for converting atoms into molecules in a Bose-Einstein condensate using stimulated Raman adiabatic passage with optimized laser pulses, achieving 92% efficiency.

Contribution

It introduces an optimized two-color photoassociation technique employing Gaussian pulses for high-efficiency atom-molecule conversion in BECs.

Findings

Achieved 92% conversion efficiency.

Efficiency depends on detuning and pulse delay.

Optimal parameter adjustment is crucial.

Abstract

We investigate the stimulated Raman adiabatic passage in two-color photoassociation for a atom-molecule Bose-Einstein condensate. By applying two time-varying Guassian laser pulses that fulfill generalized two-photon resonance condition, we obtain highly efficient atom-molecule conversion. The efficiency depends on the free-bound detuning and the delay time between the two pulses. By adjusting the parameters optimally, we achieve 92% conversion efficiency.